bow was little damaged while going down into seabed,stern was completly ripped apart
would it make some difference if there was broken parts separaton after stern was under water? lets say stern is still attached to bow and they go under together,during further sinking stern finally frees from bow and starts going spiral while bow act as bulet and go straight down..
by looking at boilers from br1 if we take vertical line to surface,it will lead to spot where they started to fall from ship,maybe the stern glided to port and boilers from boiler room 1 encountered two forces? one to pull the boilers to left and second to pull them down,boilers might been torn off their beds when breakup zone reached the beds itself and freed boilers rolled out of hull throught broken port shell plating?